Tuesday, November 22, 2011

How to replace water pump on Chevrolet Astro?

Water pump is important part/component for car cooling system.Water pump maintenance is required,to keep water pump free from problems.But in case if it gets faulty then it has to be replaced.

If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

The procedure to replace cars water pump is as follows :----

Water Pump


  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Disconnect the negative battery cable.
  3. Drain the engine cooling system.
  4. Remove or disconnect the following:
    On some engines, the pump retaining bolts will vary in size and thread. Be sure to note the positioning of all bolts during removal to assure proper installation.

    Air intake assembly
    Mass Air Flow (MAF) sensor
    Upper fan shroud
    Drive belt
    Fan and clutch assembly
    Water pump pulley using special tool J 41240
    Coolant hoses
    Water pump
  5. Clean gasket mounting surface.

    Click image to see an enlarged view
    Fig. Removing the water pump pulley using special tool J-41240

    Click image to see an enlarged view
    Fig. Water pump mounting-2002 shown
To install:
  1. Install or connect the following:

    Water pump. Torque bolts to 33 ft. lbs. (45 Nm).
    Coolant hoses using new clamps
    Water pump pulley. Tighten bolts to 18 ft. lbs. (25 Nm).
    Fan and clutch assembly
    Drive belt
    Fan shroud
    MAF sensor
    Air intake assembly
    Negative battery cable
  2. Refill the cooling system.
  3. Start the engine and check for leaks.

This details will help.
For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.


The car will not start?


Car will not crank?


Car has no spark?


How to troubleshoot car battery?


How to test starter solenoid?



How to test cars starter?


How to replace starter in car?


car will turn over but will not start?


Car wont start?


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